Folding chair

Abstract

The utility model discloses a folding chair which comprises two symmetrically arranged side strips, a backrest, a seat plate and supporting legs, wherein the backrest, the seat plate and the supporting legs are sequentially arranged between the two side strips from top to bottom and can rotate by taking a set position as a circle center; a plurality of fixed limiting nuts which are respectively matched with the backrest, the seat plate and the supporting legs are also arranged on the outer sides of the two side strips. The folding chair provided by the utility model is simple in overall structure and convenient to assemble and use, the integration of a product during folding and unfolding is effectively improved, the stability of the product during use and storage is greatly improved, and the development of the industry is well promoted.

Description

Technical Field

[0001] The present application relates to the field of folding chairs, and more specifically, to a folding chair. Background Art

[0002] A folding chair is a lightweight and foldable seat, which is convenient to move and can effectively save storage space. The folding chair was originally used in the military, so certain requirements are imposed on its portability and firmness. Nowadays, due to its lightness and firmness, the folding chair is commonly used in various training institutions, schools at all levels, public places, hospitals, restaurants, hotels, companies, families and other places. Nowadays, various enterprises are constantly improving the folding chair according to the different needs of users, and the research directions include being lighter, more convenient to overlap, more convenient to carry, etc. Utility Model Content

[0003] In view of the deficiencies of the prior art, the present application provides a folding chair, the overall structure of which is simple, the assembly and use are convenient, the integrity of the product during folding and unfolding is effectively improved, the stability of the product during use and storage is greatly improved, and the development of the industry is well promoted.

[0004] A folding chair includes two symmetrically arranged side bars, a backrest, a seat board and support feet which are sequentially arranged between the two side bars from top to bottom and can rotate around the set position as the center; several fixing limit nuts which are respectively matched with the backrest, the seat board and the support feet are further arranged on the outer sides of the two side bars.

[0005] Further, the side bar is composed of a side bar main body, an upper hole arranged at the end of the upper section of the side bar main body, a middle hole arranged at the upper part of the middle section of the side bar main body, and a lower hole arranged at the lower part of the middle section of the side bar main body; the upper hole, the middle hole and the lower hole all horizontally penetrate the side bar main body.

[0006] Furthermore, the backrest is composed of a backrest main body and upper fixing threaded heads which are symmetrically arranged on the left and right sides of the backrest main body and respectively matched with the upper holes.

[0007] Even further, the seat board is composed of a convex seat board main body, two middle fixing threaded heads which are symmetrically arranged on the left and right sides of the top of the wide section of the convex seat board main body and respectively matched with the middle holes, a folding fixing groove symmetrically arranged on the rear side edge of the lower side of the wide section of the convex seat board main body, and an unfolding fixing groove symmetrically arranged on the front side of the lower side of the wide section of the convex seat board main body.

[0008] Preferably, folding limit grooves are symmetrically arranged on the left and right side walls of the folding fixing groove; unfolding limit grooves are symmetrically arranged on the left and right side walls of the unfolding fixing groove.

[0009] Furthermore, the support feet are composed of a U-shaped support foot body, two lower fixing threaded heads symmetrically arranged on the left and right sides of the U-shaped support foot body and matching the lower holes, and insertion hook heads respectively arranged at the two ends of the U-shaped support foot.

[0010] Preferably, the insertion hook heads are simultaneously matched with the folding fixing grooves and the unfolding fixing grooves.

[0011] Preferably, a limit bump is respectively arranged on the left and right sides of the insertion hook head; the limit bump is simultaneously matched with the folding limit groove and the unfolding limit groove.

[0012] Preferably, the distance between the narrow section of the convex seat board body and the side bar body is greater than or equal to the thickness of the U-shaped support foot.

[0013] Preferably, the fixing limit nut is simultaneously matched with the upper fixing threaded head, the middle fixing threaded head and the lower fixing threaded head.

[0014] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0015] The overall structure of the utility model is simple, the assembly and use are convenient, the integrity during folding and unfolding of the product is effectively improved, the stability during use and storage of the product is greatly improved, and the development of the industry is well promoted.

[0016] Some additional features of the present application can be described below. Through the examination of the following description and the corresponding drawings, or the understanding of the production or operation of the embodiments, some additional features of the present application are obvious to those skilled in the art. The features disclosed in the present application can be realized and achieved through the practice or use of various methods, means and combinations of the specific embodiments described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute a limitation to the present application. In the drawings, the same reference numerals represent the same components. Among them,

[0018] Figure 1 is a schematic structural diagram of the folding state of the utility model.

[0019] Figure 2 is a three-dimensional view of the unfolding state of the utility model Figure 1 .

[0020] Figure 3 is a three-dimensional view of the unfolding state of the utility model Figure 2 .

[0021] Figure 4This is a schematic structural diagram of the seat board of the present utility model.

[0022] Figure 5 This is a schematic structural diagram of the support feet of the present utility model.

[0023] Explanation of reference numerals in the drawings: 100, side strip; 101, side strip main body; 102, upper hole; 103, middle hole; 104, lower hole; 105, foot slope; 200, backrest; 201, backrest main body; 202, upper fixed threaded head; 300, seat board; 301, convex seat board main body; 302, middle fixed threaded head; 303, folding fixed groove; 304, unfolding fixed groove; 305, folding limit groove; 306, unfolding limit groove; 400, support feet; 401, U-shaped support feet main body; 402, lower fixed threaded head; 403, insertion hook head; 404, limit bump. Detailed implementation manners

[0024] In order to enable those skilled in the art of this technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

[0025] It should be noted that if terms such as "first", "second", etc. are involved in the description and claims of this application and the above-mentioned drawings, they are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances for the embodiments of this application described herein. In addition, if terms such as "including" and "having" and any variations thereof are involved, the intention is to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0026] In this application, if terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "left and right horizontally", "longitudinally", etc. are involved, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.

[0027] Moreover, in addition to being used to represent orientation or positional relationships, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0028] In addition, in this application, terms such as "installation", "setting", "provided with", "connection", "connected", "socketed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0029] It should be noted that, without conflict, the embodiments and features in the embodiments of this application can be combined with each other. The following will refer to the drawings and combine with embodiments to detail this application.

[0030] Embodiment

[0031] As Figures 1-3 shown, a folding chair includes two symmetrically arranged side bars 100, a backrest 200, a seat board 300, and support feet 400 that are sequentially arranged between the two side bars 100 from top to bottom and can rotate around the set position; a plurality of fixing limit nuts are also arranged on the outer sides of the two side bars 100, which are respectively matched with the backrest 200, the seat board 300, and the support feet 400.

[0032] The side bar 100 is composed of a side bar main body 101, an upper hole 102 arranged at the upper end of the upper section of the side bar main body 101, a middle hole 103 arranged at the upper part of the middle section of the side bar main body 101, and a lower hole 104 arranged at the lower part of the middle section of the side bar main body 101; the upper hole 102, the middle hole 103, and the lower hole 104 all horizontally penetrate the side bar main body 101.

[0033] A foot slope 105 is also arranged at the bottom of the side bar main body 101. The foot slope can effectively increase the support contact area of the side bar main body with the ground when the product is unfolded, that is, it reduces the pressure of the product on the ground and ensures the stability of the product support.

[0034] The backrest 200 is composed of a backrest main body 201, and upper fixed threaded heads 202 that are symmetrically arranged on the left and right sides of the backrest main body 201 and respectively match the upper holes 102.

[0035] The seat board 300 is composed of a convex seat board main body 301, two middle fixed threaded heads 302 symmetrically arranged on the left and right sides of the top of the wide section of the convex seat board main body 301 and matching with the middle hole 103, folding fixed grooves 303 symmetrically arranged on the rear side edge of the lower side surface of the wide section of the convex seat board main body 301, and unfolding fixed grooves 304 symmetrically arranged on the front side of the lower side surface of the wide section of the convex seat board main body 301.

[0036] A shallow groove can also be provided on the front surface of the convex seat board main body to improve the comfort of the user when sitting. Several groove-shaped spaces can be provided on the back surface of the convex seat board main body, and reinforcing ribs are provided in the groove-shaped spaces, which can not only reduce the overall weight of the product, but also effectively improve the bearing capacity of the convex seat board main body.

[0037] Folding limit grooves 305 are symmetrically arranged on the left and right side walls of the folding fixed groove 303; unfolding limit grooves 306 are symmetrically arranged on the left and right side walls of the unfolding fixed groove 304.

[0038] When the product is folded, the folding fixed groove can enable the insertion hook head to be inserted therein, and then the limiting convex block cooperates with the folding limit groove, which can ensure that the insertion hook head is effectively fixed, avoid the support foot from rotating under the influence of gravity, and ensure the stability of the product during folding.

[0039] When the product is unfolded and used, the unfolding fixed groove can enable the insertion hook head to be inserted therein, and then the limiting convex block cooperates with the unfolding limit groove, which can ensure that the insertion hook head is effectively fixed. One end of the support foot supports on the ground and the other end can firmly support on the back surface of the convex seat board main body, which not only ensures the stability of the product, but also ensures the support effect of the product, can effectively avoid the situation of virtual support during the use of the product by the user, and improves the use safety of the product.

[0040] The support foot 400 is composed of a U-shaped support foot main body 401, two lower fixed threaded heads 402 symmetrically arranged on the left and right sides of the U-shaped support foot main body 401 and matching with the lower hole 104, and insertion hook heads 403 respectively arranged at both ends of the U-shaped support foot 401.

[0041] The insertion hook head 403 matches with both the folding fixed groove 303 and the unfolding fixed groove 304.

[0042] A limiting convex block 404 is respectively arranged on the left and right sides of the insertion hook head 403; the limiting convex block 404 matches with both the folding limit groove 305 and the unfolding limit groove 306.

[0043] The distance between the narrow section of the convex seat board main body 301 and the side bar main body 101 is greater than or equal to the thickness of the U-shaped support foot 401.

[0044] The spacing between the narrow section of the convex seat board main body and the side strip main body is set to facilitate the storage of the support feet, so that the product forms a flat shape after folding, greatly reducing the space required for storage or transportation of the product.

[0045] The fixed limit nut is simultaneously matched with the upper fixed thread head 202, the middle fixed thread head 302 and the lower fixed thread head 402.

[0046] The cooperation between the fixed limit nut and the thread head is the prior art in the field. The fixed limit nut can be used to adjust the rotation tightness of each component by loosening or tightening, and can also be tightened hard to make the product better maintain the fixed folded or unfolded state.

[0047] It should be noted that all the features disclosed in this specification, or all the steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

[0048] In addition, the above specific embodiments are exemplary. Those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the specification and drawings of the present invention are illustrative and do not constitute a limitation on the claims. The protection scope of the present invention is defined by the claims and their equivalents.

Claims

1. A folding chair, characterized in that, It includes two symmetrically arranged side bars (100), a backrest (200), a seat board (300), and support feet (400) which are sequentially arranged between the two side bars (100) from top to bottom and can rotate around the set position; several fixing limit nuts are also arranged on the outer sides of the two side bars (100), which are respectively matched with the backrest (200), the seat board (300), and the support feet (400).

2. The folding chair according to claim 1, wherein The side bar (100) is composed of a side bar main body (101), an upper hole (102) arranged at the upper end of the upper section of the side bar main body (101), a middle hole (103) arranged at the upper part of the middle section of the side bar main body (101), and a lower hole (104) arranged at the lower part of the middle section of the side bar main body (101); the upper hole (102), the middle hole (103), and the lower hole (104) all horizontally penetrate the side bar main body (101).

3. A folding chair according to claim 2, characterized in that, The backrest (200) is composed of a backrest main body (201), and upper fixing threaded heads (202) which are symmetrically arranged on the left and right sides of the backrest main body (201) and respectively matched with the upper holes (102).

4. A folding chair according to claim 3, wherein, The seat board (300) is composed of a convex seat board main body (301), two middle fixing threaded heads (302) which are symmetrically arranged on the left and right sides of the top of the wide section of the convex seat board main body (301) and are matched with the middle holes (103), a folding fixing groove (303) symmetrically arranged on the rear side edge of the lower side surface of the wide section of the convex seat board main body (301), and an unfolding fixing groove (304) symmetrically arranged on the front side of the lower side surface of the wide section of the convex seat board main body (301).

5. A folding chair according to claim 4, wherein, Folding limit grooves (305) are symmetrically arranged on the left and right side walls of the folding fixing groove (303); unfolding limit grooves (306) are symmetrically arranged on the left and right side walls of the unfolding fixing groove (304).

6. A folding chair according to claim 5, characterized in that, The support foot (400) is composed of a U-shaped support foot main body (401), two lower fixing threaded heads (402) which are symmetrically arranged on the left and right sides of the U-shaped support foot main body (401) and are matched with the lower holes (104), and insertion hook heads (403) respectively arranged at the two ends of the U-shaped support foot main body (401).

7. A folding chair according to claim 6, wherein The insertion hook head (403) is simultaneously matched with the folding fixing groove (303) and the unfolding fixing groove (304).

8. A folding chair according to claim 7, wherein A limit convex block (404) is respectively arranged on the left and right sides of the insertion hook head (403); the limit convex block (404) is simultaneously matched with the folding limit groove (305) and the unfolding limit groove (306).

9. A folding chair according to claim 8, wherein, The distance between the narrow section of the convex seat board main body (301) and the side bar main body (101) is greater than or equal to the thickness of the U-shaped support foot main body (401).

10. A folding chair according to claim 9, characterized in that, The fixing limit nut is simultaneously matched with the upper fixing threaded head (202), the middle fixing threaded head (302), and the lower fixing threaded head (402).

Images